Casio CZ/ VZ/ FZ - Pro Series

On 11 Feb 2002 at 13:11, Maxim Potekhin wrote:

> Very likely true. I vaguely remember something about the user having a
> few minutes to replace the batteries. I interpret it as the memory
> being preserved on some kind of capacitor for a few minutes even in the
> absence of the C cells.

The manual says you have 10 minutes after you take out the D-cells before the 
presets go bye-bye.